21 Lessons for the 21st Century, by Yuval Noah Harari

I cannot recommend enough Harari's books, I definitely think they should be mandatory reading in high school in any civilised country. You cannot find more insightful, sensible and lucid information about the problems our species faces today. I would like to quote so many of the book's sentences that I end up not quoting - you just have to read it, it's SO worth it. The author is certainly one of the greatest minds writing at the moment. Please read it.